MIL-HDBK-1300A
ff. Marker - A two-byte code in which the first byte is hexadecimal FF (0xFF) and the second byte is a value between 1 and hexadecimal FE (0xFE).
fg. Marker segment - A marker and associated set of parameters.
fh. Megahertz (MHz) - A unit of frequency denoting one million (106) Hertz.
fi. Memory mapped video - A system for transmitting information to a screen by reading it directly from memory.
fj. Metafile - A mechanism for retaining and transferring graphical data and control information. The information contains a device independent of one or more graphic images.
fk. Metamessage - A collection of information related to a NITF message, which is transmitted in association with the message.
Standards.
fl. MIL-STD-188-100 - Common Long-Haul and Tactical Communications System
fm. MIL-STD-188-114 - Electrical Characteristics of Digital Interface Circuits. fn. MIL-STD-810 - Environmental Test Methods.
fo. Minimum Coded Unit (MCU) - The smallest group of data units that is coded.
fp. Minimum compliance - The ability to create and output NITF messages and/or to accept NITF messages and recognize the component parts as prescribed in Volume II of the DOD NITF Certification Plan.
fq. Modem - Acronym for Modulator-Demodulator. A device that modulates and demodulates signals. Note: 1. Modems are primarily used for converting digital signals into quasi- analog signals for transmission over analog communication channels and for reconverting the quasi- analog signals into digital signals. Note: 2. Many additional functions may be added to a modem to provide for customer service and control features.
fr. Modes (of operation) - The four main categories of image compression processes defined in MIL-STD-188-198A (JPEG).
fs. Multicast - Transmission of a single message to a group of receivers.
ft. Multiplex - In NITFS context, use of a common channel to make two or more channels, either by splitting the frequency band transmitted by the common channel into narrower bands, each of which is used to constitute a distinct channel (frequency division multiplex), or by allotting this common channel to users in turn, to constitute different intermittent channels (time division multiplex).
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